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New Options for Training and Learning

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In 2008, I managed to achieve the goal of becoming a Microsoft Certified Trainer. Once I achieved the status, Microsoft shipped me a binder with dozens of DVDs containing lab VMs and class materials for all the current classes. At some point, instead of receiving DVDs, you were expected to download images which was quite […]

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2021-03-13

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Question of the Day

Fun with JSON I

I have some data in a table:

CREATE TABLE #test_data
(
    id INT PRIMARY KEY,
    name VARCHAR(100),
    birth_date DATE
);

-- Step 2: Insert rows  
INSERT INTO #test_data
VALUES
(1, 'Olivia', '2025-01-05'),
(2, 'Emma', '2025-03-02'),
(3, 'Liam', '2025-11-15'),
(4, 'Noah', '2025-12-22');
If I run this query, how many rows are returned?
SELECT *
FROM OPENJSON(
     (
         SELECT t.* FROM #test_data AS t FOR JSON PATH
     )
             ) t;

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